Cloth feeding mechanism for bag forming devices



'April 1935- w. M. INGRAM 1,996,204

CLOTH FEEDING MECHANISM FOR BAG-FORMING DEVICES Filed Aug. 8, 1932 v 4 Sheets-Sheet 1 eg iin g v X INVE NTOR April 2, 1935.. w. M. INGRAM CLOTH FEEDING MECHANISM FOR BAG FORMING DEVICES Filed Aug. 8, 1932 4 Sheets-Sheet 2 fl i TORNEYS April 2, 1935. w. M. INGRAM CLOTH FEEDING MECHANISM FOR BAG FORMING DEVICES Filed Aug. 8, 1932 Sheets-Sheet 3 April 2, 1935. V w. M. INGRAM I 1,996,204

CLOTH FEEDING MECHANISM FOR BAG FORMING DEVICES Filed Aug. 8, 1932 4 Sheets-Sheet 4 ATTORNEYS Patented Apr. 2, 1935 PATENT OFFICE CLOTH FEEDING MECHANISM FOR BAG a FORBHNG DEVICES fWalter M. lngrarn New .York, N. Y., assignor to Millie Patent Holding 00., Inc., New N. 'Y., a corporation of New York York,

" Application August a, 1932, scram. 627,904

11 Claims. (01. 271-24) The present invention relates to feeding mechanisms for feeding material to a'desired mechanism and embodies, more speciigcally, an improved cloth feeding mechanism for ceding a continuous sleeve'ortube of cloth intermittently. to a cutting device whereby successive lengths aresevered from the material supplied.

In manufacturing operations, such as the manufacture of bag-like receptacles; for tea and like substances, it is general practice to form the receptacles of a suitable material, such as cloth, which is fed to the bag forming means in the form of a continuous sleeve .or tube formed by folding over a length of the material andsewing adjacentthe meeting edges. The resulting tube is then rolled upon a reel and supplied to a machine of the character specifically described hereinafter, the elements of this machine constituting the present invention.

In accordancewith existing practice, it is necessary that the portions severed from the length of material supplied be heldupon supporting arms and placed over such arms automatically. In order that this may be accomplished, means must be provided to separate the adjacent sides of the tube as they are'advanced upon the'supporting arms and move the material in a uni-directional intermittentfashion: 7 g

Accordingly, it is an object Tof the present invention to provide a device for feeding a continuous sleeve of cloth or other material to acutting mechanism in a uni-directional intermittent fashion, means being provided'toprevent, effectively, a reverse movement of the material in order that the same may not'be withdrawn from the supporting arms. a H e I Afurther objectof the iIlVBl'ltlOIl'lS to provide a cloth feeding apparatus wherein a continuous sleeve or tube of cloth is drawn over an improved feeding mechanism whereby the uni-directional movement of the cloth isinsured. v

'A further object ofthe invention is to provide an improved feeding mechanism wherein the cloth is drawn over an improved feeding form in combination with which friction feed rollers func tion to insure the feeding of the'material to a supporting and cutting mechanism with the sides of the same-separated in order that the material may advance over the supporting mechanism readily, l r

Further objects, not specifically enumerated above, will be apparent as the invention is described in greater detail in connection with the accompanying drawings, wherein:

- Figure-'l'is a view in-side elevation showing a cloth feeding apparatus constructed in accordance withthe presence invention. a

Figure 2 is an enlarged plan view showing the feeding mechanism including the feeding form and rollers associated therewith.

Figure 3 is a view in side elevation showing the mechanism of Figure 2. Figure 4 is a view in'section, taken on line 4-4 of Figure 2, and looking in the direction of the arrows. I a

Figure 5 is a view in section, taken on line 55 of Figure 2, and looking in the direction of the arrows.

With referenceto the above drawings, the frame of a machine is shown at I0 and is provided with a reel mounting shaft H upon which a reel wound with material l2 may be journaled. An arm It on the machine mounts a guide roller l4 over which the material is adapted to pass as indicated by the dot and dash line. Upon the frame of the machine guide brackets I5 are mounted, these brackets being provided with a guide rod I1 which may be adjustably positioned by means of stops I8. Brackets |6 also carry a trough IS in which the material l5 lies, as indicated in Figure 3. I V I The material is fed to a cutting mechanism, such as a pair of shears indicated at 20, being advanced prior to cutting over a pair of supporting arms indicated at 2|. The supporting and cutting mechanismrconstitutes no part 'of the present invention and therefore will not be de scribed in further detail herein.

' Before placing thematerial in the'trough, I 9, an elongated tongue or guide plate 22 is inserted therein and the material drawn over the plate to extend beyond the end thereof. 'At on end of the plate 22, a feeding form 23 is secured, this form constituting cylindrically curved portions 24 upon opposite sides of the form beyond which the form flattens out into a normal width constituting a tongue portion 25 which is formed by parallel j top and bottom members. Figure 4 shows how the materialis drawn over the tongue and feeding form when the elements are mount-' ed in operating position and it will be seen that the sides'of the material 15 will be separated by the parallel sides of the tongue portion 25. Asthe form 23 is advanced to the left, asviewed in Figure l, the material is moved over the supporting arms 2| and is so positioned that, upon spreading of the arms, the material is held I Figure l, a positive frictional feedingmechanism is provided and includes a pair of spaced rollers 26 and 27 which mate with the cylindrical portions 24 of the form 23 and are adapted to be urged yieldingly against such portions. The surfaces of the rollers are formed of a substance which is of sufficient frictional characteristics (such as rubber, for example) and the rollers are journaled upon shafts 28 and 29, respectively. Shaft 28 is secured to a bracket 30 which is formed upon a head 32, slidably mounted upon guide rods E1. The head 3! is formed with recessed arms 32 which slidably engage one of the guide rods I'l, while bracket 38 is formedwith a recessed extension 33 which is slidably mounted on another of the guide rods i'i. Upon the head 3! an upwardly extending arm 34 is provided, this arm pivotally mounting a yoke-shaped arm 35 between the ends of which shaft 29 is mounted. The pivotal mounting of arm 35 upon extension 34 preferably includes a pivot shaft 36 which is fixed ot the extension 34. One end of a spring 37 is fixedto the shaft 36 and the other end bears upon arm 35 to urge the latter normally in a counterclockwise direction, as viewed in Figure l.

.Rollers 26 and21 have cooperating gear teeth 33 which cause the two rollers to be moved simultaneously. A stationary rack 39 is mounted upon the supporting brackets I6 and is adapted to engage a gear 40 which is journaled upon shaft 28.

Gear 40 is provided with a projection 46 upon which a pawl 42 is pivoted, a spring 43 being mounted upon a projection is carried by the gear 40 to urge the pawl against ratchet teeth 45 which are formed upon the periphery of a plate form 23. After the parallel plates 25 havemoved away from the left hand portion of the material, the cutting mechanism operates to sever a length of material from the sleeve which is advanced over the tongue and feeding form. It will thus be seen that the foregoing mechanism is adapted to .be operated to advance thematerial positively terial being fed effectively and yet without subjecting the same to any deleterious action.

While the invention has been described with specific reference to the accompanying drawings, it is not to'be limited, save as defined in the appended claims.

I claim as my invention:

1. Means for feeding an endless tube of material to a device comprising a reciprocable head, a guide plate associated therewith and over which the material is adapted to be drawn, a member on the plate formed with a surface against which the material is adapted to be held, and means on the head cooperating with the member to hold the material against the said surface, and means to move the holding means with respect to the guide plate.

2. Means forfeeding an endless tube of material to a device comprising a reciprocable head, a. guide plate associated therewith and over which thematerial is adapted to be drawn, a member on theplateformed with a surface against which the material is adapted to be held, and means on the head cooperating with the member to hold the material against the surface, and means to rotate the holding means upon movement of the head to advance the material over the member.

3. Means for feeding material to a device comprising a reciprocable head, a guide plate associated therewith-and over which the material is adapted to be drawn, a member on the plate formed with a surface against which the material is adapted to be held, friction rollers on the head cooperating with the member to hold the materialthereagainst and means to turn the rollers.

4. Means for feeding material to a device comprising a reciprocable head, a guide plate associated therewith and over which the material is adapted to be drawn, a member on the plate formed with a surface against which the material is adapted to be held, said member having a curved surface, a friction roller on the head cooperating with, the curved surface to hold the material thereagainst and means to turn the roller.

5. Means for feeding material tow a; device com-- prising a reciprocable head, a. guideplate associated therewith and over which the material, is adapted to be drawn, a. member on the plate formed with a surface againstwhich the, material is adapted tobe held, saidmember beingformedwith oppositely concaved surfaces, friction rollers on the head cooperating with-the concavedsurfaces to hold the materialthereagainst-and. means to turn the rollers.

6. Means for feedingmaterial to a devicecomprising a reciprocable head, a guide plate associated therewith and over. which the material is adapted to be drawn, a member. on the plate. formedwith a surface against whichthematerial is adapted to be held, said member. being, formed with oppositely concaved surfaces, friction-rollers on the head cooperating with the concaved surfaces to hold. the material thereagainst, and,- means to drive one of therollersupon movement of the head.

'7. Means forfeedingmaterial to a devicacomprising a reciprocable head, a. guiderplateassor ciated therewith and over which the. material is adapted to be drawn, a member. onthe. plate formed with a surface against which the material is adapted to be held, saidmemberbeing formed with oppositely concaved surfaces; frictionrollers on the head cooperatingwith the vconcaved.surrfaces to hold the material thereagainst, means to transmit motion between the rollers, and means: to drive one of the rollers.

8. Means for feeding material tea device com-v prising a reciprocable head,,a guide plate, associated therewith. and over which the: material.

and rotatably mounted with'respect to oneofathe. rollers, and a, ratchetandpawl connection-he tween the gear and the. one-saidroller.

9. Means for feeding material to a. devicecomr prising a reciprocablehead; aguide plateassociated therewith and over, whichthe material. is;

adapted to be drawn. at. member-0n thezPh-Le;

formed with a surface aga-instwhich thematerial is adapted to be held, said-memben, being formed ill;

the last named roller can be lifted from the memwith oppositely concaved surfaceairiction rollers on the head cooperating with the concaved surfaces to hold the material thereagainst, means to journal one of the rollers on the head, an arm pivoted on the head and joumalling the other roller whereby the last named roller can be lifted from the member, interengaging teeth on the rollers, and means to drive one of the rollers.

10. Means for feeding material to a device comprising a reciprocable head, a guide plate associated therewith and over which the material is adapted to be drawn, a member on the plate formed with a surface against which the material is adapted to be held, frictional rollers on the head cooperating with the member to hold the material thereagainst means to journal one of the rollers on the head, an arm pivoted on the head and journalling the other roller whereby ber, interengaging teeth on the rollers, a relatively stationary rack, a gear engaging the rack and rotatably mounted with respect to the first adapted tobe drawn, a member on the plate 10 formed with a surface against which the material is adapted to be held, spaced plates on the last named member, and means on the head cooperating with the member to hold the material against the surface, and means to move the holding means 15 with respect to the surface. I

WALTER M. INGRAM. 

